Monday, March 18, 2013

Sejarah komputer

Sejarah komputer

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Sejarah komputer mencakup perangkat keras, arsitekturnya, dan pengaruhnya terhadap perangkat lunak.

Daftar isi

Pengertian komputer

Komputer adalah alat yang dipakai untuk mengolah data menurut perintah yang telah dirumuskan. Kata komputer semula dipergunakan untuk menggambarkan orang yang perkerjaannya melakukan perhitungan aritmatika, dengan atau tanpa alat bantu, tetapi arti kata ini kemudian dipindahkan kepada mesin itu sendiri. Asal mulanya, pengolahan informasi hampir eksklusif berhubungan dengan masalah aritmatika, tetapi komputer modern dipakai untuk banyak tugas yang tidak berhubungan dengan matematika.
Secara luas, Komputer dapat didefinisikan sebagai suatu peralatan elektronik yang terdiri dari beberapa komponen, yang dapat bekerja sama antara komponen satu dengan yang lain untuk menghasilkan suatu informasi berdasarkan program dan data yang ada. Adapun komponen komputer adalah meliputi : Layar Monitor, CPU, Keyboard, Mouse dan Printer (sbg pelengkap). Tanpa printer komputer tetap dapat melakukan tugasnya sebagai pengolah data, namun sebatas terlihat dilayar monitor belum dalam bentuk print out (kertas).
Dalam definisi seperti itu terdapat alat seperti slide rule, jenis kalkulator mekanik mulai dari abakus dan seterusnya, sampai semua komputer elektronik yang kontemporer. Istilah lebih baik yang cocok untuk arti luas seperti "komputer" adalah "yang memproses informasi" atau "sistem pengolah informasi."
Saat ini, komputer sudah semakin canggih. Tetapi, sebelumnya komputer tidak sekecil, secanggih, sekeren dan seringan sekarang. Dalam sejarah komputer, ada 5 generasi dalam sejarah komputer.

Generasi komputer

Generasi pertama

Dengan terjadinya Perang Dunia Kedua, negara-negara yang terlibat dalam perang tersebut berusaha mengembangkan komputer untuk mengeksploit potensi strategis yang dimiliki komputer. Hal ini meningkatkan pendanaan pengembangan komputer serta mempercepat kemajuan teknik komputer. Pada tahun 1941, Konrad Zuse, seorang insinyur Jerman membangun sebuah komputer, Z3, untuk mendesain pesawat terbang dan peluru kendali.
Pihak sekutu juga membuat kemajuan lain dalam pengembangan kekuatan komputer. Tahun 1943, pihak Inggris menyelesaikan komputer pemecah kode rahasia yang dinamakan Colossus untuk memecahkan kode rahasia yang digunakan Jerman. Dampak pembuatan Colossus tidak terlalu memengaruhi perkembangan industri komputer dikarenakan dua alasan. Pertama, Colossus bukan merupakan komputer serbaguna(general-purpose computer), ia hanya didesain untuk memecahkan kode rahasia. Kedua, keberadaan mesin ini dijaga kerahasiaannya hingga satu dekade setelah perang berakhir.
Usaha yang dilakukan oleh pihak Amerika pada saat itu menghasilkan suatu kemajuan lain. Howard H. Aiken (1900-1973), seorang insinyur Harvard yang bekerja dengan IBM, berhasil memproduksi kalkulator elektronik untuk US Navy. Kalkulator tersebut berukuran panjang setengah lapangan bola kaki dan memiliki rentang kabel sepanjang 500 mil. The Harvard-IBM Automatic Sequence Controlled Calculator, atau Mark I, merupakan komputer relai elektronik. Ia menggunakan sinyal elektromagnetik untuk menggerakkan komponen mekanik. Mesin tersebut beropreasi dengan lambat (ia membutuhkan 3-5 detik untuk setiap perhitungan) dan tidak fleksibel (urutan kalkulasi tidak dapat diubah). Kalkulator tersebut dapat melakukan perhitungan aritmatik dasar dan persamaan yang lebih kompleks.
Perkembangan komputer lain pada masa kini adalah Electronic Numerical Integrator and Computer (ENIAC), yang dibuat oleh kerjasama antara pemerintah Amerika Serikat dan University of Pennsylvania. Terdiri dari 18.000 tabung vakum, 70.000 resistor, dan 5 juta titik solder, komputer tersebut merupakan mesin yang sangat besar yang mengonsumsi daya sebesar 160kW.
Komputer ini dirancang oleh John Presper Eckert (1919-1995) dan John W. Mauchly (1907-1980), ENIAC merupakan komputer serbaguna (general purpose computer) yang bekerja 1000 kali lebih cepat dibandingkan Mark I.
Pada pertengahan 1940-an, John von Neumann (1903-1957) bergabung dengan tim University of Pennsylvania dalam usaha membangun konsep desain komputer yang hingga 40 tahun mendatang masih dipakai dalam teknik komputer. Von Neumann mendesain Electronic Discrete Variable Automatic Computer (EDVAC) pada tahun 1945 dengan sebuah memori untuk menampung baik program ataupun data. Teknik ini memungkinkan komputer untuk berhenti pada suatu saat dan kemudian melanjutkan pekerjaannya kembali. Kunci utama arsitektur von Neumann adalah unit pemrosesan sentral (CPU), yang memungkinkan seluruh fungsi komputer untuk dikoordinasikan melalui satu sumber tunggal. Tahun 1951, UNIVAC I (Universal Automatic Computer I) yang dibuat oleh Remington Rand, menjadi komputer komersial pertama yang memanfaatkan model arsitektur Von Neumann tersebut.
Baik Badan Sensus Amerika Serikat dan General Electric memiliki UNIVAC. Salah satu hasil mengesankan yang dicapai oleh UNIVAC dalah keberhasilannya dalam memprediksi kemenangan Dwilight D. Eisenhower dalam pemilihan presiden tahun 1952.
Komputer Generasi pertama dikarakteristik dengan fakta bahwa instruksi operasi dibuat secara spesifik untuk suatu tugas tertentu. Setiap komputer memiliki program kode biner yang berbeda yang disebut "bahasa mesin" (machine language). Hal ini menyebabkan komputer sulit untuk diprogram dan membatasi kecepatannya. Ciri lain komputer generasi pertama adalah penggunaan tube vakum (yang membuat komputer pada masa tersebut berukuran sangat besar) dan silinder magnetik untuk penyimpanan data.

Generasi kedua

Pada tahun 1948, penemuan transistor sangat memengaruhi perkembangan komputer. Transistor menggantikan tube vakum di televisi, radio, dan komputer. Akibatnya, ukuran mesin-mesin elektrik berkurang drastis.
Transistor mulai digunakan di dalam komputer mulai pada tahun 1956. Penemuan lain yang berupa pengembangan memori inti-magnetik membantu pengembangan komputer generasi kedua yang lebih kecil, lebih cepat, lebih dapat diandalkan, dan lebih hemat energi dibanding para pendahulunya. Mesin pertama yang memanfaatkan teknologi baru ini adalah superkomputer. IBM membuat superkomputer bernama Stretch, dan Sprery-Rand membuat komputer bernama LARC. Komputer-komputer ini, yang dikembangkan untuk laboratorium energi atom, dapat menangani sejumlah besar data, sebuah kemampuan yang sangat dibutuhkan oleh peneliti atom. Mesin tersebut sangat mahal dan cenderung terlalu kompleks untuk kebutuhan komputasi bisnis, sehingga membatasi kepopulerannya. Hanya ada dua LARC yang pernah dipasang dan digunakan: satu di Lawrence Radiation Labs di Livermore, California, dan yang lainnya di US Navy Research and Development Center di Washington D.C. Komputer generasi kedua menggantikan bahasa mesin dengan bahasa assembly. Bahasa assembly adalah bahasa yang menggunakan singkatan-singakatan untuk menggantikan kode biner.
Pada awal 1960-an, mulai bermunculan komputer generasi kedua yang sukses di bidang bisnis, di universitas, dan di pemerintahan. Komputer-komputer generasi kedua ini merupakan komputer yang sepenuhnya menggunakan transistor. Mereka juga memiliki komponen-komponen yang dapat diasosiasikan dengan komputer pada saat ini: printer, penyimpanan dalam disket, memory, sistem operasi, dan program.
Salah satu contoh penting komputer pada masa ini adalah 1401 yang diterima secara luas di kalangan industri. Pada tahun 1965, hampir seluruh bisnis-bisnis besar menggunakan komputer generasi kedua untuk memprosesinformasi keuangan.
Program yang tersimpan di dalam komputer dan bahasa pemrograman yang ada di dalamnya memberikan fleksibilitas kepada komputer. Fleksibilitas ini meningkatkan kinerja dengan harga yang pantas bagi penggunaan bisnis. Dengan konsep ini, komputer dapat mencetak faktur pembelian konsumen dan kemudian menjalankan desain produk atau menghitung daftar gaji. Beberapa bahasa pemrograman mulai bermunculan pada saat itu. Bahasa pemrograman Common Business-Oriented Language (COBOL) dan Formula Translator (FORTRAN) mulai umum digunakan. Bahasa pemrograman ini menggantikan kode mesin yang rumit dengan kata-kata, kalimat, dan formula matematika yang lebih mudah dipahami oleh manusia. Hal ini memudahkan seseorang untuk memprogram dan mengatur komputer. Berbagai macam karier baru bermunculan (programmer, analis sistem, dan ahli sistem komputer). Industr piranti lunak juga mulai bermunculan dan berkembang pada masa komputer generasi kedua ini.

Generasi ketiga

Walaupun transistor dalam banyak hal mengungguli tube vakum, namun transistor menghasilkan panas yang cukup besar, yang dapat berpotensi merusak bagian-bagian internal komputer. Batu kuarsa (quartz rock) menghilangkan masalah ini. Jack Kilby, seorang insinyur di Texas Instrument, mengembangkan sirkuit terintegrasi (IC : integrated circuit) pada tahun 1958. IC mengkombinasikan tiga komponen elektronik dalam sebuah piringan silikon kecil yang terbuat dari pasir kuarsa. Pada ilmuwan kemudian berhasil memasukkan lebih banyak komponen-komponen ke dalam suatu chip tunggal yang disebut semikonduktor. Hasilnya, komputer menjadi semakin kecil karena komponen-komponen dapat dipadatkan dalam chip. Kemajuan komputer generasi ketiga lainnya adalah penggunaan sistem operasi (operating system) yang memungkinkan mesin untuk menjalankan berbagai program yang berbeda secara serentak dengan sebuah program utama yang memonitor dan mengkoordinasi memori komputer.

Generasi keempat

Setelah IC, tujuan pengembangan menjadi lebih jelas: mengecilkan ukuran sirkuit dan komponen-komponen elektrik. Large Scale Integration (LSI) dapat memuat ratusan komponen dalam sebuah chip. Pada tahun 1980-an, Very Large Scale Integration (VLSI) memuat ribuan komponen dalam sebuah chip tunggal.
Ultra-Large Scale Integration (ULSI) meningkatkan jumlah tersebut menjadi jutaan. Kemampuan untuk memasang sedemikian banyak komponen dalam suatu keping yang berukurang setengah keping uang logam mendorong turunnya harga dan ukuran komputer. Hal tersebut juga meningkatkan daya kerja, efisiensi dan keterandalan komputer. Chip Intel 4004 yang dibuat pada tahun 1971membawa kemajuan pada IC dengan meletakkan seluruh komponen dari sebuah komputer (central processing unit, memori, dan kendali input/output) dalam sebuah chip yang sangat kecil. Sebelumnya, IC dibuat untuk mengerjakan suatu tugas tertentu yang spesifik. Sekarang, sebuah mikroprosesor dapat diproduksi dan kemudian diprogram untuk memenuhi seluruh kebutuhan yang diinginkan. Tidak lama kemudian, setiap piranti rumah tangga seperti microwave, oven, televisi, dan mobil dengan electronic fuel injection (EFI) dilengkapi dengan mikroprosesor.
Perkembangan yang demikian memungkinkan orang-orang biasa untuk menggunakan komputer biasa. Komputer tidak lagi menjadi dominasi perusahaan-perusahaan besar atau lembaga pemerintah. Pada pertengahan tahun 1970-an, perakit komputer menawarkan produk komputer mereka ke masyarakat umum. Komputer-komputer ini, yang disebut minikomputer, dijual dengan paket piranti lunak yang mudah digunakan oleh kalangan awam. Piranti lunak yang paling populer pada saat itu adalah program word processing dan spreadsheet. Pada awal 1980-an, video game seperti Atari 2600 menarik perhatian konsumen pada komputer rumahan yang lebih canggih dan dapat diprogram.
Pada tahun 1981, IBM memperkenalkan penggunaan Personal Computer (PC) untuk penggunaan di rumah, kantor, dan sekolah. Jumlah PC yang digunakan melonjak dari 2 juta unit pada tahun 1981 menjadi 5,5 juta unit pada tahun 1982. Sepuluh tahun kemudian, 65 juta PC digunakan. Komputer melanjutkan evolusinya menuju ukuran yang lebih kecil, dari komputer yang berada di atas meja (desktop computer) menjadi komputer yang dapat dimasukkan ke dalam tas (laptop), atau bahkan komputer yang dapat digenggam (palmtop).
IBM PC bersaing dengan Apple Macintosh dalam memperebutkan pasar komputer. Apple Macintosh menjadi terkenal karena memopulerkan sistem grafis pada komputernya, sementara saingannya masih menggunakan komputer yang berbasis teks. Macintosh juga memopulerkan penggunaan piranti mouse.
Pada masa sekarang, kita mengenal perjalanan IBM compatible dengan pemakaian CPU: IBM PC/486, Pentium, Pentium II, Pentium III, Pentium IV (Serial dari CPU buatan Intel). Juga kita kenal AMD k6, Athlon, dsb. Ini semua masuk dalam golongan komputer generasi keempat.
Seiring dengan menjamurnya penggunaan komputer di tempat kerja, cara-cara baru untuk menggali potensial terus dikembangkan. Seiring dengan bertambah kuatnya suatu komputer kecil, komputer-komputer tersebut dapat dihubungkan secara bersamaan dalam suatu jaringan untuk saling berbagi memori, piranti lunak, informasi, dan juga untuk dapat saling berkomunikasi satu dengan yang lainnya. Jaringan komputer memungkinkan komputer tunggal untuk membentuk kerjasama elektronik untuk menyelesaikan suatu proses tugas. Dengan menggunakan perkabelan langsung (disebut juga Local Area Network atau LAN), atau [kabel telepon, jaringan ini dapat berkembang menjadi sangat besar.

Generasi kelima

Mendefinisikan komputer generasi kelima menjadi cukup sulit karena tahap ini masih sangat muda. Contoh imajinatif komputer generasi kelima adalah komputer fiksi HAL9000 dari novel karya Arthur C. Clarke berjudul 2001: Space Odyssey. HAL menampilkan seluruh fungsi yang diinginkan dari sebuah komputer generasi kelima. Dengan kecerdasan buatan (artificial intelligence atau AI), HAL dapat cukup memiliki nalar untuk melakukan percapakan dengan manusia, menggunakan masukan visual, dan belajar dari pengalamannya sendiri.
Walaupun mungkin realisasi HAL9000 masih jauh dari kenyataan, banyak fungsi-fungsi yang dimilikinya sudah terwujud. Beberapa komputer dapat menerima instruksi secara lisan dan mampu meniru nalar manusia. Kemampuan untuk menterjemahkan bahasa asing juga menjadi mungkin. Fasilitas ini tampak sederhana. Namun fasilitas tersebut menjadi jauh lebih rumit dari yang diduga ketika programmer menyadari bahwa pengertian manusia sangat bergantung pada konteks dan pengertian ketimbang sekedar menterjemahkan kata-kata secara langsung.
Banyak kemajuan di bidang desain komputer dan teknologi yang semakin memungkinkan pembuatan komputer generasi kelima. Dua kemajuan rekayasa yang terutama adalah kemampuan pemrosesan paralel, yang akan menggantikan model non Neumann. Model non Neumann akan digantikan dengan sistem yang mampu mengkoordinasikan banyak CPU untuk bekerja secara serempak. Kemajuan lain adalah teknologi superkonduktor yang memungkinkan aliran elektrik tanpa ada hambatan apapun, yang nantinya dapat mempercepat kecepatan informasi.
Jepang adalah negara yang terkenal dalam sosialisasi jargon dan proyek komputer generasi kelima. Lembaga ICOT (Institute for new Computer Technology) juga dibentuk untuk merealisasikannya. Banyak kabar yang menyatakan bahwa proyek ini telah gagal, namun beberapa informasi lain bahwa keberhasilan proyek komputer generasi kelima ini akan membawa perubahan baru paradigma komputerisasi di dunia.

Pranala luar

Tutorial From Wikipedia, the free encyclopedia Jump to: navigation, search For tutorial about Wikipedia, see Wikipedia:Tutorial. For other tutorial information on Wikipedia, see Help:contents. A tutorial is a method of transferring knowledge and may be used as a part of a learning process. More interactive and specific than a book or a lecture; a tutorial seeks to teach by example and supply the information to complete a certain task. Depending on the context a tutorial can take one of many forms, ranging from a set of instructions to complete a task to an interactive problem solving session (usually in academia). Contents 1 Academia 1.1 Tutorial Class 1.2 Online Tutorials 1.3 Tutorial Schools 2 Internet 3 Computer-based tutoring 4 See also 5 References Academia Tutorial Class In British academic parlance, a tutorial is a small class of one, or only a few, students, in which the tutor (a lecturer or other academic staff member) gives individual attention to the students.[citation needed] The tutorial system at Oxford and Cambridge is fundamental to methods of teaching at those universities, but it is by no means peculiar to them; Heythrop College (University of London), for instance, also offers a tutorial system with one on one teaching. It is rare for newer universities in the UK to have the resources to offer individual tuition; six to eight (or even more) students is a far more common tutorial size. At Cambridge, a tutorial is known as a supervision. In some Canadian universities, such as the University of Waterloo or the University of Toronto, a tutorial refers to something more like a seminar, a class of between 12-18 students that is supplemental to a large lecture course, which gives students the opportunity to discuss the lectures and/or additional readings in smaller groups.[1] These tutorials are often led by graduate students, normally known as "Teaching Assistants" (TAs), though it is not unknown for the primary instructor of a course, even if a full professor, to take a tutorial. At Princeton University, these tutorials are known as preceptorials and are led by preceptors. Woodrow Wilson developed the preceptorial system, intending it to be the main form of teaching. In Australian and New Zealand universities, a tutorial (colloquially called a tute) is a class of 10–30 students. Such tutorials are very similar to the Canadian system, although tutorials are usually led by honours or postgraduate students, known as 'tutors'. At the two campuses of St. John's College, U.S. and a few other American colleges with a similar version of the Great Books program, a "tutorial" is a class of 12 - 16 students who meet regularly with the guidance of a tutor. The tutorial focuses on a certain subject area (e.g. mathematics tutorial, language tutorial) and generally proceeds with careful reading of selected primary texts and working through associated exercises (e.g., demonstrating a Euclid proof or translating ancient Greek poetry). Since formal lectures do not play a large part in the St. John's College curriculum, the tutorial is the primary method by which certain subjects are studied. However, at St. John's the tutorial is considered ancillary to the seminar, in which a slightly larger group of students meets with two tutors for broader discussion of the particular texts on the seminar list. Some US colleges, such as Williams College in Williamstown, Massachusetts, offer tutorials almost identical in structure to that of an Oxbridge tutorial. At Williams, students in tutorials typically work in pairs alongside a professor and meet weekly, alternately presenting position papers or critiques of their partner's paper. Online Tutorials Traditional online tutoring uses the internet to faciilate tutorials and tutoring relationships across time and space. New institutions such as Khan Academy and Coursera are combining extensive video libraries of lectures and seminars, interactive challenges and tutorials, and online assessments to teach students for free. Courses include traditional subjects such as K-12 math, biology, chemistry, physics, finance to subjects as diverse as songwriting, gamification, and cryptography.[2] Tutorial Schools There are also specialised schools for tutoring such as Kumon and EduHub. These supplemental hands-on learning programmes are especially popular in Asia.[3][4] Some schools such as the LSE offer tutoring schemes that allow older students to tutor younger pupils.[5] Internet Internet computer tutorials can take the form of a screen recording (screencast i.e. Lynda.com), a written document (either online or downloadable), jQuery tutorial (e.g. Joyride jQuery Tour), interactive tutorial (e.g. Kera), or an audio file, where a person will give step by step instructions on how to do something.[6] Tutorials usually have the following characteristics: A presentation of the view usually explaining and showing the user the user interface A demonstration of a process, using examples to show how a workflow or process is completed; often broken up into discrete modules or sections. Some method of review that reinforces or tests understanding of the content in the related module or section. A transition to additional modules or sections that builds on the instructions already provided. Tutorials can be linear or branching. While many writers refer to a mere list of instructions or tips as a tutorial, this usage can be misleading. Computer-based tutoring In computer-based education, a tutorial is a computer program whose purpose it is to assist users in learning how to use (parts of) a software product such as an office suite or any other application, operating system interface, programming tool, or video game. There are 3 kinds of software tutorials: 1) video tutorials that the user views, 2) interactive tutorials where the user follows on-screen instructions (and—in some cases—watches short instruction movies), whereupon he/she does the tutorial exercises and receives feedback depending on his/her actions; and 3) webinars where users participate in real-time lectures, online tutoring, or workshops remotely using web conferencing software. See also Tutor Online Tutoring Tuition agency Teaching assistant How-to Knowledge base References ^ "Key Strategies for Effective Tutorials". University of Waterloo. Retrieved Feb 20, 2013. ^ "Coursera Courses". Coursera. Retrieved Feb 20, 2013. ^ "Meet the 'tutor kings and queens'". BBC. ^ "Tutoring Spreads Beyond Asia's Wealthy". New York Times. ^ "LSE Student Tutoring Scheme". LSE. ^ Zhang, Taige (Jan 19th, 2013). "Web Apps Onboarding: How to Treat Your New Users"

Tutorial

From Wikipedia, the free encyclopedia
Jump to: navigation, search
A tutorial is a method of transferring knowledge and may be used as a part of a learning process. More interactive and specific than a book or a lecture; a tutorial seeks to teach by example and supply the information to complete a certain task.
Depending on the context a tutorial can take one of many forms, ranging from a set of instructions to complete a task to an interactive problem solving session (usually in academia).

Contents

Academia

Tutorial Class

In British academic parlance, a tutorial is a small class of one, or only a few, students, in which the tutor (a lecturer or other academic staff member) gives individual attention to the students.[citation needed] The tutorial system at Oxford and Cambridge is fundamental to methods of teaching at those universities, but it is by no means peculiar to them; Heythrop College (University of London), for instance, also offers a tutorial system with one on one teaching. It is rare for newer universities in the UK to have the resources to offer individual tuition; six to eight (or even more) students is a far more common tutorial size. At Cambridge, a tutorial is known as a supervision.
In some Canadian universities, such as the University of Waterloo or the University of Toronto, a tutorial refers to something more like a seminar, a class of between 12-18 students that is supplemental to a large lecture course, which gives students the opportunity to discuss the lectures and/or additional readings in smaller groups.[1] These tutorials are often led by graduate students, normally known as "Teaching Assistants" (TAs), though it is not unknown for the primary instructor of a course, even if a full professor, to take a tutorial. At Princeton University, these tutorials are known as preceptorials and are led by preceptors. Woodrow Wilson developed the preceptorial system, intending it to be the main form of teaching.
In Australian and New Zealand universities, a tutorial (colloquially called a tute) is a class of 10–30 students. Such tutorials are very similar to the Canadian system, although tutorials are usually led by honours or postgraduate students, known as 'tutors'.
At the two campuses of St. John's College, U.S. and a few other American colleges with a similar version of the Great Books program, a "tutorial" is a class of 12 - 16 students who meet regularly with the guidance of a tutor. The tutorial focuses on a certain subject area (e.g. mathematics tutorial, language tutorial) and generally proceeds with careful reading of selected primary texts and working through associated exercises (e.g., demonstrating a Euclid proof or translating ancient Greek poetry). Since formal lectures do not play a large part in the St. John's College curriculum, the tutorial is the primary method by which certain subjects are studied. However, at St. John's the tutorial is considered ancillary to the seminar, in which a slightly larger group of students meets with two tutors for broader discussion of the particular texts on the seminar list.
Some US colleges, such as Williams College in Williamstown, Massachusetts, offer tutorials almost identical in structure to that of an Oxbridge tutorial. At Williams, students in tutorials typically work in pairs alongside a professor and meet weekly, alternately presenting position papers or critiques of their partner's paper.

Online Tutorials

Traditional online tutoring uses the internet to faciilate tutorials and tutoring relationships across time and space.
New institutions such as Khan Academy and Coursera are combining extensive video libraries of lectures and seminars, interactive challenges and tutorials, and online assessments to teach students for free. Courses include traditional subjects such as K-12 math, biology, chemistry, physics, finance to subjects as diverse as songwriting, gamification, and cryptography.[2]

Tutorial Schools

There are also specialised schools for tutoring such as Kumon and EduHub. These supplemental hands-on learning programmes are especially popular in Asia.[3][4]
Some schools such as the LSE offer tutoring schemes that allow older students to tutor younger pupils.[5]

Internet

Internet computer tutorials can take the form of a screen recording (screencast i.e. Lynda.com), a written document (either online or downloadable), jQuery tutorial (e.g. Joyride jQuery Tour), interactive tutorial (e.g. Kera), or an audio file, where a person will give step by step instructions on how to do something.[6]
Tutorials usually have the following characteristics:
  • A presentation of the view usually explaining and showing the user the user interface
  • A demonstration of a process, using examples to show how a workflow or process is completed; often broken up into discrete modules or sections.
  • Some method of review that reinforces or tests understanding of the content in the related module or section.
  • A transition to additional modules or sections that builds on the instructions already provided. Tutorials can be linear or branching.
While many writers refer to a mere list of instructions or tips as a tutorial, this usage can be misleading.

Computer-based tutoring

In computer-based education, a tutorial is a computer program whose purpose it is to assist users in learning how to use (parts of) a software product such as an office suite or any other application, operating system interface, programming tool, or video game. There are 3 kinds of software tutorials: 1) video tutorials that the user views, 2) interactive tutorials where the user follows on-screen instructions (and—in some cases—watches short instruction movies), whereupon he/she does the tutorial exercises and receives feedback depending on his/her actions; and 3) webinars where users participate in real-time lectures, online tutoring, or workshops remotely using web conferencing software.

See also

References

  1. ^ "Key Strategies for Effective Tutorials". University of Waterloo. Retrieved Feb 20, 2013.
  2. ^ "Coursera Courses". Coursera. Retrieved Feb 20, 2013.
  3. ^ "Meet the 'tutor kings and queens'". BBC.
  4. ^ "Tutoring Spreads Beyond Asia's Wealthy". New York Times.
  5. ^ "LSE Student Tutoring Scheme". LSE.
  6. ^ Zhang, Taige (Jan 19th, 2013). "Web Apps Onboarding: How to Treat Your New Users"

Cara menghubungkan 2 komputer - via Kabel LAN

Tips Trick Cara menghubungkan 2 komputer - via Kabel LAN

Menghubungkan 2 Komputer atau PC dengan kabel Cross, atau biasa orang sebut Crossing…!, yaitu PC ke PC atau LAN Card ke LAN Card tanpa menggunakan Hub atau Switch, bila sudah mengenal konfigurasi LAN dan TCP/IP maka cara menghubungkan 2 Komputer ini tak beda jauh dengan menghubungkan ke beberapa komputer dengan hub.
Pada jaman perkembangan teknologi komputer yang sudah secanggih seperti sekarang ini di mana komputer sudah cukup pasaran seperti makanan ringan dan apa-apa sudah serba networking , apa-apa serba online bahkan kita bisa mengendalikan bisnis cukup dengan Laptop sambil tiduran di kamar. Maka menurut saya para pengguna komputer sedikit banyaknya perlu memahami masalah jaringan atau peng-koneksian antar PC tidak seperti jaman dulu di mana masalah teknis dan networking terbatas hanya di mengerti para IT atau Teknisi.
Jenis koneksi komputer yang secara umum di dukung oleh System-system Operasi versi terakhir saat ini ada 3 jenis yaitu:
1.Infrared Connection - yaitu komputer-komputer yg akan di koneksikan harus mempunyai port infrared (IR), koneksi jenis ini banyak di manfaatkan oleh para pengguna komputer Laptop di mana umumnya laptop di dalamnya sudah terpasang port(IR).
2.Direct Cable Connection - yaitu memanfaatkan port serial atau paralel yang ada di hampir semua komputer memakai kabel paralel atau serial. koneksi jenis ini jaman sekarang sudah jarang sekali di pakai.
3.Ethernet - yaitu menggunakan Ethernet Card yang di pasang dan di install di PC serta kabel UTP sebagai perantara nya, Jenis koneksi yang inilah yang paling populer dan paling banyak di gunakan di mana-mana dari tingkat jaringan kecil sampai jaringan besar. ini yang akan saya bahas di sini.
Secara singkat untuk menghubungkan 2 komputer atau PC atau membuat suatu jaringan komputer kecil atau besar ada 2 hal pokok yang perlu di lakukan:
Pertama menyiapkan perangkat penghubung koneksi seperti: kabel UTP, Hub atau switch, Router (bila di perlukan),…
Kedua memberikan alamat TCP/IP di setiap Ethernet Card PC yang akan di hubungkan.

MENYIAPKAN PERANGKAT PENGHUBUNG

Menghubungkan 2 komputer atau PC langsung tanpa menggunakan hub atau switch dapat dengan mudah dilakukan dengan menyiapkan kabel UTP yang di pasang Connector RJ45 dengan susunan kabel cross, yang merupakan lawan dari kabel straight-through dengan urutan sebagai berikut:
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cara-menghubungkan-komputer-LAN-port-kabel
STRAIGHT
—————————
Kabel 1 Oranye - garis putih
Kabel 2 Oranye
Kabel 3 Hijau - garis putih
Kabel 4 Biru
Kabel 5 Biru - garis putih
Kabel 6 Hijau
Kabel 7 Coklat - garis putih
Kabel 8 Coklat
—————————
cara-menghubungkan-komputer-LAN-port-kabel-2
CROSS
—————————
Kabel 1 Hijau - garis putih
Kabel 2 Hijau
Kabel 3 Oranye - garis putih
Kabel 4 Biru
Kabel 5 Biru - garis putih
Kabel 6 Oranye
Kabel 7 Coklat - garis putih
Kabel 8 Coklat
—————————
Kabel cross berbeda dengan kabel straight-through karena salah satu ujung yang memancarkan dan menerima ditukar. Komputer yang terhubung ke hub biasanya menggunakan kabel straight-through. Jadi ujung pertama urutan standart (straight) dan pada ujung lainnya kabel pada urutan 1 ditukar 3, dan pada urutan 2 di tukar 6
Kabel 1 Menjadi 3
Kabel 2 Menjadi 6
Kabel 3 Menjadi 1
Kabel 4 Biru
Kabel 5 Biru - garis putih
Kabel 6 Menjadi 3
Kabel 7 Coklat - garis putih
Kabel 8 Coklat
Bila susunan kabel yang di perlukan sudah siap maka tinggal memasukan ke connector RJ45 lalu di tekan dengan Crimp Tool

MEMBERIKAN ALAMAT TCP/IP

Apa IP itu ?
cara-menghubungkan-komputer-LAN-port-kabel-3
IP adalah “sebuah nomor yang digunakan untuk akses ke Internet atau suatu jaringan komputer. Setiap komputer yang terhubung dengan internet atau jaringan harus memiliki nomor IP yang berbeda (unik).”
IP itu sendiri ditentukan oleh Subnetmask, fungsi dari subnetmask ini adalah untuk membedakan bagian mana dari IP tersebut disebut network dan bagian mana yang disebut dengan host.
Contoh dari subnetmask : 255.255.255.0 atau FF.FF.FF.0 atau dapat ditulis dengan prefix /24 disini cara penulisan yang kita gunakan adalah dengan menggunakan prefix “/” .
IP Address yang sekarang kita gunakan adalah IPv4 (IP version 4 ) yang mendefinisikan 32 bit, berarti hanya 232 (4.294.697.296) alamat IPv4 yang tersedia.
Sebelum memberikan alamat TCP/IP tentu terlebih dahulu harus di pastikan Ethernet Card atau banyak juga menyebut LAN Card harus sudah terpasang dan ter-install Driver-nya di tiap PC yang akan di hubungkan. Mainboard generasi sekarang kebanyakan sudah ada Onboard Ethernet Card nya, bila belum ada bisa di beli dan di pasang serta di install Driver-nya.
Kemudian untuk memberi TCP/IP sekarang kita ambil contoh pada konfigurasi menggunakan Windows XP,untuk OS lain nya kurang lebih juga sama, yang penting kan logika-nya…!
Klik -> start –> Setting –> Network Connections –> klik-kanan Local are Connections–>Properties –> pada jendela Local are Connections Properties : pilih –> Internet Protocol(TCP/IP) –> klik Tab Properties –> lalu pilih : Use the following IP address –>lalu isikan IP address kelas C, seperti gambar di bawah ini:
cara-menghubungkan-komputer-LAN-port-kabel-4cara-menghubungkan-komputer-LAN-port-kabel-5
Seperti gambar di atas IP address PC utama/Server adalah:
IP address:
192.168.0.1 (IP default dari OS Windows)
Subnet mask
255.255.255.0
default gateway:–di kosongkan aja untuk tahap ini–
IP address PC lain/client nya adalah:
IP address:
192.168.0.1 (IP default dari OS Windows)
Subnet mask
255.255.255.0
default gateway
192.168.0.1 ( Boleh juga di tidak di isi ,IP dari PC utama yang nantinya berguna untuk sharing internet). Kemudian sampai tahap ini bila kabel UTP dengan susunan Cross tadi sudah terpasang RJ45 sekarang tinggal mengetes koneksi, yaitu memasukan ujung-ujung Connector RJ45 ke masing-masing Ethernet / LAN Card di PC, lalu bisa di tes dengan cara menge-Ping nya dari menu Run–>klik–>Start–> Run–> ketik –>ping 192.168.0.1 (IP PC utama, yang di ping dari PC lainnya, atau kebalikannya), bila “Reply” maka koneksi “Sukses”…..atau bisa juga di tes langsung melalui Sharing Files, Drive atau Folder…cara untuk sharing ini tentu mudah tinggal –>klik-kanan pada Drive atau folder yang akan di sharing–>Sharing and Security–>lalu pilih Options Sharing.

MEMASANG KABEL UTP YANG SUDAH TERPASANG KONEKTOR KE PC

Setelah kabel utp terpasang konektor, langkah selanjutnya adalah menancapkan kabel utp tersebut ke LAN CARD computer, jika hanya menggunakan dua computer maka pasanglah kabel UTP yg telah terpasang RJ-45 dengan konfigurasi cross-over ke masing-masing komputer, tetapi jika terdiri dari tiga computer atau lebih maka kita harus menggunakan switch/switch dengan topologi kira -kira sebagai berikut :
cara-menghubungkan-komputer-LAN-port-kabel-6cara-menghubungkan-komputer-LAN-port-kabel-7
Gambar di atas merupakan switch atau hub yang terdiri 8 port, yang banyak terdapat dipasaran switch/hub dengan jumlah colokan rj -45 sebanyak 4/8/16/32 port , mengenai pemilihan tinggal disesuaikan dengan kebutuhan. Untuk memasang kabel UTP pada switch, Anda tinggal menancapkan satu konektor RJ -45 yang telah terpasang pada kabel UTP tadi ke salah satu port pada switch/hub dan satunya lagi pada PC. Jika sudah di tancapkan maka akan muncul icon LAN Connected pada system tray computer :
cara-menghubungkan-komputer-LAN-port-kabel-8
sumber: http://brichana.blogsome.com/

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Tuesday, March 12, 2013

Microsoft Word

Microsoft Word

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Microsoft Word
Microsoft Word 2013 Icon.png
Microsoft Word on Windows 8.png
Microsoft Office Word 2013 on Windows 8
Developer(s) Microsoft
Stable release 2013 (15.0.4433.1506) / December 11, 2012; 2 months ago
Operating system Microsoft Windows
Type Word processor
License Trialware
Website office.microsoft.com/en-us/word/
Microsoft Word for Mac
Microsoft Word 2011 Icon.png
Microsoft Word for Mac 2011.png
Microsoft Word for Mac 2011
Developer(s) Microsoft
Operating system Mac OS X
Type Word processor
License Commercial proprietary software
Website www.microsoft.com/mac/word
Microsoft Word is a word processor designed by Microsoft. It was first released in 1983 under the name Multi-Tool Word for Xenix systems.[1][2][3] Subsequent versions were later written for several other platforms including IBM PCs running DOS (1983), the Apple Macintosh (1984), the AT&T Unix PC (1985), Atari ST (1986), SCO UNIX, OS/2, and Microsoft Windows (1989). It is a component of the Microsoft Office software system; it is also sold as a standalone product and included in Microsoft Works Suite.

Contents

History

Origins and growth: 1981 to 1995

In 1981, Microsoft hired Charles Simonyi, the primary developer of Bravo, the first GUI word processor, which was developed at Xerox PARC.[4] Simonyi started work on a word processor called Multi-Tool Word and soon hired Richard Brodie, a former Xerox intern, who became the primary software engineer.[4][5][6]
Microsoft Word 5.0 for DOS. Versions 1.0 to 4.0 had a similar user interface.
Microsoft announced Multi-Tool Word for Xenix[4] and MS-DOS in 1983.[7] Its name was soon simplified to Microsoft Word.[1] Free demonstration copies of the application were bundled with the November 1983 issue of PC World, making it the first program to be distributed on-disk with a magazine.[1][8] Unlike most MS-DOS programs at the time, Microsoft Word was designed to be used with a mouse,[7] and it was able to display some formatting, such as bold, italic, and underlined text, although it could not render fonts.[1] It was not initially popular, since its user interface was different from the leading word processor at the time, WordStar.[9] However, Microsoft steadily improved the product, releasing versions 2.0 through 5.0 over the next six years.
Microsoft Word 5.1 for Mac OS.
In 1985, Microsoft ported Word to the Macintosh. This was made easier by the fact that Word for DOS had been designed for use with high-resolution displays and laser printers, even though none were yet available to the general public.[10] Following the precedents of LisaWrite and MacWrite, Word for Mac added true WYSIWYG features. After its release, Word for Mac's sales were higher than its MS-DOS counterpart for at least four years.[4]
The second release of Word for Macintosh, shipped in 1987, was named Word 3.0 to synchronize its version number with Word for DOS; this was Microsoft's first attempt to synchronize version numbers across platforms. Word 3.0 included numerous internal enhancements and new features, including the first implementation of the Rich Text Format (RTF) specification, but was plagued with bugs. Within a few months Word 3.0 was superseded by a more stable Word 3.01, which was mailed free to all registered users of 3.0.[10] After MacWrite, Word for Mac never had any serious rivals on the Mac. Word 5.1 for the Macintosh, released in 1992, was a very popular word processor owing to its elegance, relative ease of use and feature set. Many users say its the best version of Word for Mac ever created.[10][11]
In 1986, an agreement between Atari and Microsoft brought Word to the Atari ST[12] under the name Microsoft Write. The Atari ST version was a port of Word 1.05 for the Apple Macintosh[13][14] and was never updated.
The first version of Word for Windows was released in 1989. With the release of Windows 3.0 the following year, sales began to pick up and Microsoft soon became the market leader for word processors for IBM PC-compatible computers.[4] In 1991, Microsoft capitalized on Word for Windows' increasing popularity by releasing a version of Word for DOS, version 5.5, that replaced its unique user interface with an interface similar to a Windows application.[15][16] When Microsoft became aware of the Year 2000 problem, it made Microsoft Word 5.5 for DOS available for download free. As of February 2012, it is still available for download from Microsoft's web site.[17] In 1991, Microsoft embarked on a project code-named Pyramid to completely rewrite Microsoft Word from the ground up. Both the Windows and Mac versions would start from the same code base. It was abandoned when it was determined that it would take the development team too long to rewrite and then catch up with all the new capabilities that could have been added in the same time without a rewrite. Instead, the next versions of Word for Windows and Mac, dubbed version 6.0, both started from the code base of Word for Windows 2.0.[11]
With the release of Word 6.0 in 1993, Microsoft again attempted to synchronize the version numbers and coordinate product naming across platforms, this time across DOS, Macintosh, and Windows (this was the last version of Word for DOS). It introduced AutoCorrect, which automatically fixed certain typing errors, and AutoFormat, which could reformat many parts of a document at once. While the Windows version received favorable reviews (e.g.,[18]), the Macintosh version was widely derided. Many accused it of being slow, clumsy and memory intensive, and its user interface differed significantly from Word 5.1.[11] In response to user requests, Microsoft was forced to offer Word 5 again, after it had been discontinued.[19] Subsequent versions of Word for Macintosh are no longer direct ports of Word for Windows, instead featuring a mixture of ported and native code.
Word 2007 icon
Microsoft Word 2007

Microsoft Word for Windows since 1995

A full-featured word processing program for Windows and Mac from Microsoft. Available stand-alone or as part of the Microsoft Office suite, Word contains rudimentary desktop publishing capabilities and is the most widely used word processing program on the market. Word files are commonly used as the format for sending text documents via e-mail because almost every user with a computer can read a Word document by using the Word application, a Word viewer or a word processor that imports the Word format (see Microsoft Word Viewer). Word 95 for Windows was the first 32-bit version of the product, released with Office 95 around the same time as Windows 95. It was a straightforward port of Word 6.0 and it introduced few new features, one of them being red-squiggle underlined spell-checking.[20] Starting with Word 95, releases of Word were named after the year of its release, instead of its version number.[21]

Microsoft Word for Mac since 1995

In 1997, Microsoft formed the Macintosh Business Unit as an independent group within Microsoft focused on writing software for the Mac. Its first version of Word, Word 98, was released with Office 98 Macintosh Edition. Document compatibility reached parity with Word 97,[19] and it included features from Word 97 for Windows, including spell and grammar checking with squiggles.[22] Users could choose the menus and keyboard shortcuts to be similar to either Word 97 for Windows or Word 5 for Mac.
Word 2001, released in 2000, added a few new features, including the Office Clipboard, which allowed users to copy and paste multiple items.[23] It was the last version to run on classic Mac OS and, on Mac OS X, it could only run within the Classic Environment. Word X, released in 2001, was the first version to run natively on, and required, Mac OS X,[22] and introduced non-contiguous text selection.[24]
Word 2004 was released in May 2004. It included a new Notebook Layout view for taking notes either by typing or by voice.[25] Other features, such as tracking changes, were made more similar with Office for Windows.[26]
Word for Mac 2008 icon
Word 2008, released on January 15, 2008, included a Ribbon-like feature, called the Elements Gallery, that can be used to select page layouts and insert custom diagrams and images. It also included a new view focused on publishing layout, integrated bibliography management,[27] and native support for the new Office Open XML format. It was the first version to run natively on Intel-based Macs.[28]
Word 2010 allows more customization of the Ribbon,[29] adds a Backstage view for file management,[30] has improved document navigation, allows creation and embedding of screenshots,[31] and integrates with Word Web App.[32]
Word 2011, released in October 2010, replaced the Elements Gallery in favor of a Ribbon user interface that is much more similar to Office for Windows,[33] and includes a full-screen mode that allows users to focus on reading and writing documents, and support for Office Web Apps.[34]

File formats

File extension

Microsoft Word's native file formats are denoted either by a .doc or .docx file extension.
Although the ".doc" extension has been used in many different versions of Word, it actually encompasses four distinct file formats:
  1. Word for DOS
  2. Word for Windows 1 and 2; Word 4 and 5 for Mac
  3. Word 6 and Word 95 for Windows; Word 6 for Mac
  4. Word 97 and later for Windows; Word 98 and later for Mac
The newer ".docx" extension signifies the Office Open XML international standard for Office documents and is used by Word 2007, 2010 and 2013 for Windows, Word 2008 and 2011 for the Macintosh, as well as by a growing number of applications from other vendors, including OpenOffice.org Writer, an open source word processing program.[35]

Binary formats (Word 97–2003)

During the late 1990s and early 2000s, the default Word document format (.DOC) became a de facto standard of document file formats for Microsoft Office users. Though usually just referred to as "Word Document Format", this term refers primarily to the range of formats used by default in Word version 97-2003. Word document files by using the Word 97-2003 Binary File Format implement OLE (Object Linking and Embedding) structured storage to manage the structure of their file format. OLE behaves rather like a conventional hard drive file system and is made up of several key components. Each Word document is composed of so-called "big blocks" which are almost always (but do not have to be) 512-byte chunks; hence a Word document's file size will in most cases be a multiple of 512.
"Storages" are analogues of the directory on a disk drive, and point to other storages or "streams" which are similar to files on a disk. The text in a Word document is always contained in the "WordDocument" stream. The first big block in a Word document, known as the "header" block, provides important information as to the location of the major data structures in the document. "Property storages" provide metadata about the storages and streams in a doc file, such as where it begins and its name and so forth. The "File information block" contains information about where the text in a Word document starts, ends, what version of Word created the document and other attributes.
Microsoft has published specifications for the Word 97-2003 Binary File Format.[36] However, these specifications were criticised for not documenting all of the features used by Word binary file format.[37]
Word 2007 and 2010 continue to support the DOC file format, although it is no longer the default.

XML Document (Word 2003)

The XML format introduced in Word 2003[38] was a simple, XML-based format called WordprocessingML.

Cross-version compatibility

Opening a Word Document file in a version of Word other than the one with which it was created can cause incorrect display of the document. The document formats of the various versions change in subtle and not so subtle ways (such as changing the font, or the handling of more complex tasks like footnotes), creating a "lock in" phenomenon to the base (proprietary) standard.[39] Formatting created in newer versions does not always survive when viewed in older versions of the program, nearly always because that capability does not exist in the previous version.[39] Rich Text Format (RTF), an early effort to create a format for interchanging formatted text between applications, is an optional format for Word that retains most formatting and all content of the original document.

Third party formats

Plugins permitting the Windows versions of Word to read and write formats it does not natively support, such as international standard OpenDocument format (ODF) (ISO/IEC 26300:2006), are available. Up until the release of Service Pack 2 (SP2) for Office 2007, Word did not natively support reading or writing ODF documents without a plugin, namely the SUN ODF Plugin or the OpenXML/ODF Translator. With SP2 installed, ODF format 1.1 documents can be read and saved like any other supported format in addition to those already available in Word 2007.[39][40][41][42][43] The implementation faces substantial criticism, and the ODF Alliance and others have claimed that the third party plugins provide better support.[44] Microsoft later declared that the ODF support has some limitations.[45]
In October 2005, one year before the Microsoft Office 2007 suite was released, Microsoft declared that there was insufficient demand from Microsoft customers for the international standard OpenDocument format support, and that therefore it would not be included in Microsoft Office 2007. This statement was repeated in the following months.[46][47][48][49] As an answer, on October 20, 2005 an online petition was created to demand ODF support from Microsoft.[50] The petition was signed by approximately 12000 people.[51]
In May 2006, the ODF plugin for Microsoft Office was released by the OpenDocument Foundation.[52] Microsoft declared that it had no relationship with the developers of the plugin.[53]
In July 2006, Microsoft announced the creation of the Open XML Translator project – tools to build a technical bridge between the Microsoft Office Open XML Formats and the OpenDocument Format (ODF). This work was started in response to government requests for interoperability with ODF. The goal of project was not to add ODF support to Microsoft Office, but only to create a plugin and an external toolset.[54][55] In February 2007, this project released a first version of the ODF plugin for Microsoft Word.[56]
In February 2007, Sun released an initial version of its ODF plugin for Microsoft Office.[57] Version 1.0 was released in July 2007.[58]
Microsoft Word 2007 (Service Pack 1) supports (for output only) PDF and XPS formats, but only after manual installation of the Microsoft 'Save as PDF or XPS' add-on.[59][60] On later releases, this was offered by default.

Image formats

Word can import and display images in common bitmap formats such as JPG and GIF. It can also be used to create and display simple line-art. No version of Microsoft Word has support for the common SVG vector image format.

Features and flaws

Among its features, Word includes a built-in spell checker, a thesaurus, a dictionary, and utilities for manipulating and editing text. The following are some aspects of its feature set.

WordArt

WordArt enables drawing text in a Microsoft Word document such as a title, watermark, or other text, with graphical effects such as skewing, shadowing, rotating, stretching in a variety of shapes and colors and even including three-dimensional effects, starting at version 2007, and prevalent in Office 2010. Users can apply formatting effects such as shadow, bevel, glow, and reflection to their document text as easily as applying bold or underline. Users can also spell-check text that uses visual effects, and add text effects to paragraph styles.

Macros

A Macro is a rule of pattern that specifies how a certain input sequence(often a sequence of characters) should be mapped to an output sequence according to defined process. Frequently used or repetitive sequences of keystrokes and mouse movements can be automated. Like other Microsoft Office documents, Word files can include advanced macros and even embedded programs. The language was originally WordBasic, but changed to Visual Basic for Applications as of Word 97.
This extensive functionality can also be used to run and propagate viruses in documents. The tendency for people to exchange Word documents via email, USB flash drives, and floppy disks made this an especially attractive vector in 1999. A prominent example was the Melissa virus, but countless others have existed in the wild.
These macro viruses were the only known cross-platform threats between Windows and Macintosh computers and they were the only infection vectors to affect any Mac OS X system up until the advent of video codec trojans in 2007. Microsoft released patches for Word X and Word 2004 that effectively eliminated the macro problem on the Mac by 2006.
Word's macro security setting, which regulates when macros may execute, can be adjusted by the user, but in the most recent versions of Word, is set to HIGH by default, generally reducing the risk from macro-based viruses, which have become uncommon.

Layout issues

Before Word 2010 (Word 14) for Windows, the program was unable to correctly handle ligatures defined in TrueType fonts.[61] Those ligature glyphs with Unicode codepoints may be inserted manually, but are not recognized by Word for what they are, breaking spell checking, while custom ligatures present in the font are not accessible at all. Since Word 2010, the program now has advanced typesetting features which can be enabled:[62] OpenType ligatures,[63] kerning, and hyphenation. Other layout deficiencies of Word include the inability to set crop marks or thin spaces. Various third-party workaround utilities have been developed.[64] Similarly, combining diacritics are handled poorly: Word 2003 has "improved support", but many diacritics are still misplaced, even if a precomposed glyph is present in the font.
Additionally, as of Word 2002, Word does automatic font substitution when it finds a character in a document that does not exist in the font specified. It is impossible to deactivate this, making it very difficult to spot when a glyph used is missing from the font in use. If "Mirror margins" or "Different odd and even" are enabled, Word will not allow the user to freshly begin page numbering an even page after a section break (and vice versa). Instead it inserts a mandatory blank page which cannot be removed.[65]
In Word 2004 for Macintosh, support of complex scripts was inferior even to Word 97[citation needed], and Word 2004 does not support Apple Advanced Typography features like ligatures or glyph variants.[66]

Bullets and numbering

Word has extensive lists of bullets and numbering features used for tables, lists, pages, chapters, headers, footnotes, and tables of content. Bullets and numbering can be applied directly or using a button or by applying a style or through use of a template. Some problems with numbering have been found in Word 97-2003. An example is Word's system for restarting numbering.[67] The Bullets and Numbering system has been significantly overhauled for Office 2007, which drastically reduces these problems.
Users can also create tables in Word. Depending on the version, Word can perform simple calculations. Formulae are supported as well.

AutoSummarize

AutoSummarize highlights passages or phrases that it considers valuable. The amount of text to be retained can be specified by the user as a percentage of the current amount of text.
According to Ron Fein of the Word 97 team, AutoSummarize cuts wordy copy to the bone by counting words and ranking sentences. First, AutoSummarize identifies the most common words in the document (barring "a" and "the" and the like) and assigns a "score" to each word—the more frequently a word is used, the higher the score. Then, it "averages" each sentence by adding the scores of its words and dividing the sum by the number of words in the sentence—the higher the average, the higher the rank of the sentence. "It's like the ratio of wheat to chaff," explains Fein.[68]
AutoSummarize was removed from Microsoft Word for Mac 2011, although it was present in Word for Mac 2008. AutoSummarize was removed from the Office 2010 release version (14) as well.[69]

Password protection

There are 3 password types that can be set in Microsoft Word:
  • password to open a document[70]
  • password to modify a document [71]
  • password restricting formatting and editing [72]
The second and the third type of passwords were developed by Microsoft for convenient shared use of documents rather than for their protection. There's no encryption of documents that are protected by such passwords, and Microsoft Office protection system saves a hash sum of a password in a document's header where it can be easily accessed and removed by the specialized software. Password to open a document offers much tougher protection that had been steadily enhanced in the subsequent editions of Microsoft Office.
Word 95 and all the preceding editions had the weakest protection that utilized a conversion of a password to a 16-bit key.
Key length in Word 97 and 2000 was strengthened up to 40 bit. However, modern cracking software allows removing such a password very quickly – a persistent cracking process takes one week at most. Use of rainbow tables by online services like Password-Find reduces password removal time to several seconds. Some password recovery software can not only remove a password, but also find an actual password that was used by a user to encrypt the document using brute-force attack approach. Statistically, the possibility of recovering the password depends on the password strength.
Word's 2003/XP default protection remained the same but an option that allowed advanced users choosing a Cryptographic Service Provider was added.[73] If a strong CSP is chosen, guaranteed document decryption becomes unavailable, and therefore a password can't be removed from the document. Nonetheless, a password can be fairly quickly picked with brute-force attack, because its speed is still high regardless of the CSP selected. Moreover, since the CSPs are not active by the default, their use is limited to advanced users only.
Word 2007 offers a significantly more secure document protection which utilizes the modern Advanced Encryption Standard that converts a password to a 128-bit key using a SHA-1 hash function 50000 times. It makes password removal impossible (as of today, no computer that can pick the key in reasonable amount of time exists), and drastically slows the brute-force attack speed down to several hundreds of passwords/second.
Word's 2010 protection algorithm was not changed apart from increasing number of SHA-1 conversions up to 100000 times, and consequently, the brute-force attack speed decreased two times more.

Versions

Microsoft Word 5.5 for DOS
Microsoft Word 2.0c on Windows 3.1
Microsoft Word 2000 running on Windows 2000
Microsoft Word 2010 running on Windows 7
Microsoft Word for Windows release history
Year Released Name Version Comments
1989 Word for Windows 1.0

1990 Word for Windows 1.1 1.1 Code-named Bill the Cat
1990 Word for Windows 1.1a 1.1a For Windows 3.1
1991 Word for Windows 2.0 2.0 Code-named Spaceman Spiff
1993 Word for Windows 6.0 6.0 Code-named T3 (renumbered 6 to bring Windows version numbering in line with that of DOS version, Macintosh version and also WordPerfect, the main competing word processor at the time; also a 32-bit version for Windows NT only)
1995 Word 95 7.0 Included in Office 95
1997 Word 97 8.0 Included in Office 97
1998 Word 98 8.5 Only sold as part of Office 97 Powered By Word 98, which was only available in Japan and Korea.
1999 Word 2000 9.0 Included in Office 2000
2001 Word 2002 10.0 Included in Office XP
2003 Office Word 2003 11.0 Included in Office 2003
2006 Office Word 2007 12.0 Included in Office 2007; released to businesses on November 30, 2006, released worldwide to consumers on January 30, 2007
2010 Word 2010 14.0 Included in Office 2010
2013 Word 2013 15.0 Included in Office 2013
Note: Version number 13 was skipped due to superstition.[74]
Microsoft Word for Mac release history
Year Released Name Comments
1985 Word 1
1987 Word 3
1989 Word 4 Part of Office 1.0 and 1.5
1991 Word 5
  • Part of Office 3.0
  • Requires System 6.0.2, 512 KB of RAM (1 MB for 5.1, 2 MB to use spell check and thesaurus), 6.5 MB available hard drive space[10]
1992 Word 5.1
  • Part of Office 3.0
  • Last version to support 68000-based Macs[10]
1993 Word 6
  • Part of Office 4.2
  • Shares code and user interface with Word for Windows 6
  • Requires System 7.0, 4 MB of RAM (8 MB recommended), at least 10 MB available hard drive space, 68020 CPU[10]
1998 Word 98
2000 Word 2001
2001 Word v. X
2004 Word 2004 Part of Office 2004
2008 Word 2008 Part of Office 2008
2010 Word 2011 Part of Office 2011
Word for MS-DOS release history
Year released Name Comments
1983 Word 1
1985 Word 2
1986 Word 3
1987 Word 4
1989 Word 5
1991 Word 5.1
1991 Word 5.5 First DOS version to use a Windows-like user interface
1993 Word 6.0
Word release history on other platforms
Platform Year released Name Comments
Atari ST 1988 Microsoft Write Based on Microsoft Word 1.05 for Mac
OS/2 1992 Microsoft Word for OS/2 version 1.1B

See also

References

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Further reading

  • Tsang, Cheryl. Microsoft: First Generation. New York: John Wiley & Sons, Inc. ISBN 978-0-471-33206-0.
  • Liebowitz, Stan J. & Margolis, Stephen E. WINNERS, LOSERS & MICROSOFT: Competition and Antitrust in High Technology Oakland: Independent Institute. ISBN 978-0-945999-80-5.

External links

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